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A091420 as a simple table

na(n)
11
21
32
41
53
61
74
83
92
105
111
126
133
143
155
161
178
183
199
203
2110
225
2311
242
251
2612
273
289
2913
3014
313
325
3315
3411
353
361
3716
384
3917
403
418
429
435
4413
4519
463
4720
485
4921
5015
5122
5211
533
541
5523
5624
5717
582
5925
603
619
625
6326
6413
6519
6612
6727
6828
693
705
7129
728
7313
7421
7530
7615
7731
7811
793
801
8123
8233
8334
8417
8535

[1,1,2,1,3,1,4,3,2,5,1,6,3,3,5,1,8,3,9,3,10,5,11,
 2,1,12,3,9,13,14,3,5,15,11,3,1,16,4,17,3,8,9,5,13,
 19,3,20,5,21,15,22,11,3,1,23,24,17,2,25,3,9,5,26,
 13,19,12,27,28,3,5,29,8,13,21,30,15,31,11,3,1,23,
 33,34,17,35]